Material-moving apparatus



June 22 G. T., SMITH MATERIAL MOVING APPARATUS Filed Feb. '25 1926 2 Sheets-Sheet l June 22,1926

G. T. SMITH MATERIAL MOVING APPARATUS Filed Feb. 23, 1926 2 Sheets-Sheet 2 areZ f cfmi Patented June 22, 1921?.

UNITED STATES ear-s ur OFFICE.

GARRETT T..SMITI*I, OFCI-IICAGO, ILLINOIS, ASSIGNOR T0 SAUER'MAN BROS, INC OF CHICAGO, ILLINOIS,

A CGRPOIt-ATI ION DIE ILLINOIS.

MATERIAL-MOVING APPARATUS.

Application filed February My invention relates to improvements in material moving apparatus of the type disclosed in U. S. Letters Patent No. 1,159,803, granted November 9. 1915, to H. B. Sauerman, and involving, generally stated, an inclined cable WttY'flOllQj which a-carriage is uu vablmthe carriagebeing provided with a bucket, or the like, supported thereon with its center of gravity, when loaded, extend ing in the rear of its point of support, the tarriagge being); "further provided with a pivoted rearward. extension engaged by a flexible element. as for example, a chain which is connected with one end of the bucket and at its other end carries a block which. runs along; the cable and. adjacent the point of dumping, engages a stop for effecting the swinging 0-1 the bucket "to dumping, position, against the action oit'gravity.

Apparatus ot the type above referred to a s hitherto provided, presents the objection that the pivoted rearward extension of the carriage, in the continued downward movement of the latter, after the block engages the stop, when the parts of the apparatus are so proportioned as to produce the best practical result-s, sometimes drops and strikes the bucket with the IIIQDIfQStd1sadvantage.

One or. mvobjects is to provide improve ments to the'end that the pivoted extension referred -to may not drop sufficiently far to strike the bucket; another object is to pro vide cushioning-means etfective in the operation o't dumping the bucket. to rcduceshock, and minimize wear: another object is to provide tor the accomplishment of both of the above "first-reterred-to objects by a single mechanism, and other-objects as will be manifest from the following description.

Referring to the 'accompanying draw- -ings:

Figure 1 is a view in elevation of an apparatus constructed in accordance with my invention, the'apparatus being shown in the position it assumes after thebucket has been loaded and is travelling downwardly on the cable way to the point otdumping. Figure is a top plan view of the apparatus illustrated in Fig. 1 with the bucket omitted, this view being taken at the line 2 on Fig. 1 and viewed in the direction of the arrow; and Figure 3, a View like Fig. 1 showing the bucked: in dumped position.

"he inclined cable way which would be 23, 1926. Serial No. 89,878.

supported, in practice, to extend across the material to be moved as, for example,'the ground to be excavated or dredged, is represented at 4-. and,in accordance with common practice, is so associated with other parts, not shown, as to permit it-to be slack cned for permitting the bucket to be end with the material to be used, and to taut condition preparatory'to the tron of transferring'the bucketito Ithe oint of dumping.

ltlounted on the cable are travel-thereon is a carriage 5 which, in the construction illustrated, is formedof aap-air of frames'ti secured together in spaced relation by conncctors certain of which areshownat 7 and F- and support rotating pulleys 1111at,-'which the carriage is supported on the cable way t to be adapted tobe moved .alongthe latter.

The dumping scraper or bucket represented at. '12 is of a form generally used, its forward open digging end being provided with a cuttingbtlge portion '13. According :to the arrangement illustrated in the drawings, the bucket :12 is supported from the carriage 5 in such a manner that when loaded the center of gravity 'oli' the bucket will be toward the rom of the lat- 'ter, the bucket in this construction being supported from the carriage by means of a cable '14 which is connected at one end with' an eye'15 on the rear 'end'of the-bucket .12, and with a bail 16 connected "with the forward end of? the bucket, this =loail being provided with a row of openings certainof which are/shown at 16 at-any one of which the clevis portion M of the cable may connect. The cable 14 intermediate its ends runs over a pulley 17 journalled on the carriage 5 between the frame members 6 thereof.

The hauling line, through the mediumof which the carriage and bucket are moved along the cable way,'isrepresented-at'IS and terminates in sections 19 and 20, the section 20 being connected, asindicated at 20, with the forward end of the bucket Myand the section 19 passing over a pulleyQI, journalled on a pin 21 on the frame 5 and connecting at one end with "the bail 16, a't a clevis 19 thereon. p

The bucket 12 is also connected at 22 with, one end of a cable 23 which passes over a pulley 24 journalled on the carriage 5, and

thence around a pulley 25 journalled on an arm 26 pivotally connected at 27 to the carriage 5 and extending rearwardly therefrom in a direction lengthwise of the cable 4. the end of the cable 23 adjacent the pulley 25 being provided with a block 28 winch straddles the cable 4 and is movable along the latter, the block 28 being provided with a pulley 29 which engages the cable 4 to reduce friction. The block 28 is provided for cooperation. in a manner hereinafter described, with a stop device 30 adapted to be clamped to the cable 4 at any desired point along the latter and positioned on this cable below the block 28.

The arm 26 is provided with a link 3i pivotally connected, at its lower end with the arm 26, as indicated at 32, the upper end of this link carrying a roller 33 journalled thereon and bearing against the upper surface of the cable 4.

In the operation of the apparatus described, the line 4 is first slaekened to allow the bucket 12 to engage with the material to be moved, whereupon the hauling line 18 is drawn on. causing the bucket to till. The operator then causes the cable 4 to become more or less taut as conditions render it dcsirable, thus lifting the bucket 12 away from the material on the ground and permitting it and the carriage to move down the cable way4under the control of the operator paying out the hauling line 18. hen the carriage moves down on the cable 4 to a posi tion in which the block 28 engages the stop 30, the block 28 is arrested in its downward move along the cable 4 and continued movement of the carriage downwardly along the cable way will thus cause the bucket to be moved to the dumping position represented in Fig. 3, the cable 14 in this operation running over the pulley 17. As the center of gravity of the bucket is toward the rear end thereof the movement for rolling the bucket into dumping position is against gravity and is strictly under the control of the operator handling the hauling line 18, and thus the roll-over movement may be a gradual, or a rapid, one as desired.

The function of the link 31 is two-fold. One function performed by it is to prevent the arm 26 from swinging downwardly and striking the bucket 12 in the movement of the carriage 5 downwardly on the cable way 4 after the block 28 has engaged the stop 30. In this connection it may be stated that whereas there is no need of a link, such as link 31, to hold the extension 26 in raised position when the block 28 is out of engage ment with the stop 30 as shown in Fig. 1., due to the fact that the block 28 extends adjacent the outer end of this arm, there is need of such a link when the arm 26 moves downwardly relative to the block 28, as in such movement the leverage exerted on the arm 26 tending to hold it up, becomes less and less, and of such small amount, when the parts of the apparatus reach dumping position, that the arm 26 when made of the most practical length, will not be held up by the cable 23 alone and oftentimes strikes the bucket. The link 31 thus operates as a check, permitting of the use of as long a: arm 26 as is desired, without possibility of this arm striking the bucket.

The second function above referred to, of the link is that of. cushioning the carriage and bucket in the downward moroment of the same to dumping position to he end that the impact got these parts against the stop 30 will be absorbed. This function is produced by the link 31 engaging the block 28 in the final movement of the parts of the ap 'iaratus. In the continued descent of the carriage along the cable way 4, after the block 2 has engaged the stop 80, the arm 26 swings downwardly to a position in which it is supported by the link 31 from the cable way 4, the link in this position of the parts extending at substantially a right angle to the arm 26. Near the end of the downward movement of the carriage, the link 31 strikes the block 28 with the result of n'ioving the link 31 and the arm 26 to the position shown in Fig. 3. the cn-- gagement of the link with the block as stated serving to exert a force against the arm 26 tending to swing it upwardly at its pivot 27. It will be noted that as the link 31 swings about its pivot 32, the angular distance between the cable way and the arm 26, is reduced. against the resistance of the arm 26, due to its weight, and the amount of this resistance is very rapidly increased as the angular distance referred to is decreased, thus resulting in the arresting of the movement of these moving parts within a comparatively short distance and with minimum shock.

It will be understood that by adjusting the stop 30 along the cable way 4, the dumping of the bucket may be effected at any desired point on the cable.

It will furthermore be underst od t the foregoing description and the dra that following the dumping of the b at the same may be readily righted by pulling on the hauling cable 18.

By providing the multiplicity of holes 16 in the bail 16 of the bucket the connections of the cables 14 and 19 with the bucket may be made at the desired points for properly balancing the loads when composed of vring materials and under varying conditiuns of operation.

While I have illustrated and described a particular construction in which my li.=0l1 tion is embodied, I do not wish to be understood as intending to limit it thereto, as the same may be variously modified and altered,

and the invention embodied in other forms of structure, without departing from the spirit -oi my invention. ldurthermore, I do not wish *to be understood as intending to limit my invention to .an apparatus wherein aslack lineis-employed with a bucket oi": the type shown operating thereon, as it may be embodied in. anap aaratusemploying a cablecooperating witlra bucketinthc form ot-a so-called skip which would be loaded atone elevatimi, as by dumping the material into-it, and then-allowed to descend on the line'to the point-0t dumping at. which it would be automatic-ally dumped, as explained ot the construction shown.

hat- I'claim as new, and-desire to accrue by Letters Patent, is:

1. In apparatusot thecharactcr set forth, the'combinatim'i of an inclined cable, a car riage movable.thereon and pro ided with'a rearwardly projecting extension pivoted to thehody of thecarriageabucket supportei'l on said carriage with the center ct -gravity ofthe bucket,when-loaded, int-he rear ot its point 0t support, "a hauling .line for the "bucket, ablock running on said-cable, a

cable,-or chain,-connected with saidblock and-with said bucket to-the rear ot its center of gravity and movable on said carriage and extension, a stop on said inclined cable adapted to be engaged by said block upon the descent ot the bucket on said inclined cable, and means engaging said extension for preventing downward swinging; of said extension against said bucket.

2. In apparatus oil v the character s t forth, the combination of an inclined. cable, a carriage movable thereon and provided with a rearwardly projecting extension pivoted to the body of the carriage, a bucket supported on said carriage with the center ot gravity of the bucket when. loaded, in the rear of its point of support, a. hauling line For the bucket, a block running on. said cable, a cable, or chain, connected with said block and with said bucket to the rear o't its center of gravity and movable on said carriage and extension. a stop on said inclined cable adapted to be engaged by said block upon the descent oi the bucket on said inclined cable, and means engaging said extension. and said first-named cable for limiting downward wringing of said extension.

3. In apparatus of the character set forth, the con'ibination of an inclined cable, a carriage movable thereon and provided with a rearwardly projecting extension pivoted to the body of the carriage, a bucket supported on said carriage with the center of gravity oithe bucket, when loaded, in the rear of its point oi. support, a hauling line for the bucket, a block running on said cable, a cable, or chain, connected with said block and with said bucket to the rear of its center of gravity and movable on said carriage and extension, a stop on said inclined cable adapted to beengaged by said block upon the descent of the bucket on said inclined cable, anda member connected with said extension and overlying said firstnamed cable for limiting down *ard movement of said extension, the connection between said member and extension adapting these two last referred to elcn'ients tor relative movement.

4-. lnapparatus oi": the character setforth, the combination of an inclined cable, a carriage n'iovable thereon and provided with a rcarnuirdly projecting extension pivoted to the body ot the carriage, a bucket supported on said carriage with he center of avity cf the bucket, when loaded, in the rear of its pointot support, a ha ling line tor the bucket, a block running on said cable, a cablc,or chain, connected with sz d block l-with said bucket to the rear of its cenct' y and/movable on t 'd carriage won, a stop onsaid 'ned cable ock upon 1 inclined and a link pivoted on a extension overlying said :ii-rst-namcd cable for limiting downward movement of said extension.

5'. In apparatus of the character set forth, the combination of an inclined cable, a carriage movable thereon and provided with a rearwardly projecting extension pivoted to the body of the carriage, a bucket supported on said carriage with the center of gravity of the bucket, when loaded, in the rear of its point oi support, a hauling line for the bucket, a block running on said cable, a cable, or chain, connected with said block and with said bucket to the rear of its center of gravity and movable on said carriage and extension, a stop on said. inclined cable adapted to be engaged by said block upon the descent of the bucket on said inclined cable, and a member connected. with said extension and overlying said first-named cable and into the path of downward movement of which said block, when engaging said stop, extends, the connection between said member and extension adapting these two last-reterred-to elements for relative movement.

6. In apparatus of the character set forth, the combination of an inclined cable, a carriage movable thereon and provided with a rearwardly projecting extension pivoted to the body of the carriage, a bucket supported on said carriage with the center of gravity of the bucket, when loaded, in the rear of its point of support, a haulingline for the bucket, a block running on said cable, a cable, or chain, connected with said block and with said bucket to the rear of its center oi gravity and movable on said carriage and extension, a stop on said inzlined cable adapted to be engaged by and block upon the descent of the bu hot on said inclined cable, and a linl: pi voted on said extension and overlying said first-named cable and into the path of downward movement oi which said block, when engaging said stop, extends.

7. in apparatus ou the character set forth, the combination of an inclined cable, a ca i e movable thereon and provided with a ii'ii'ardly projectin extension pivoted to of the c: age, a bucket supported on I coiri-ipge with the center 01'? gravity of when loaded, in the rear of? its point ct snpport, a hauling; line for the bucket, a block runningon said cable, a cable, or chain, connected with said block and 1 1th said bucket to the rear of its cenravity and movable on said carriage and e tension, a stop on said inclined cable adapted to be en and by said bloclz upon the descent of the bucket on said inclined cable, and means operating; auton'iatically to em '1: a force on said extension in a direction to lift it against its tenthenc to swing down.i'ardly, in the movement of said GXll-Qllsion along said first-named cable after said block engages said stop.

8. iii apparatus of the ij-haracter set forth, the combination of an inclined cable, a carriage movable thereon and provided with a rearwardly projecting extension pivoted to the body of the carriage, a bucket supported on said carriage with the center of gravity of the bucket, when loaded, in the rear of its point of support, a hauling line for the bucket, a block running on said cable, a cable, or chain, connected with said block and with sa d bucket to the rear of its ceutor of and mo -sable on said carriage and calcite 1, a stop on said inc ned cable adapted to be engaged by said blocl-r. upon the descent of the bucket on said inclined cable, and a link pivotally connected with said ansion and having a portion at which it overlies said first-named cable, said link being located between the point at which said extension is pivotally supported on said carriage and the point at which said second.-

c erred-to cable engages said extension, said int; mieraiiin 1gto limit the downward swingoi said eitension and being so positioned a; it eng' s with said block for swing l ext ,nsion upwardly, following the engagement oi? said block with said stop.

GARRETT T. SMITH. 

